Willow Smith performs at the Regency Ballroom in San Francisco on Sept. 18, 2021. Onome Uyovbievbo/STAFF. SAN FRANCISCO — Willow Smith has hit her stride, and the 20-year-old known as WILLOW reminded her audience at the Regency Ballroom on Saturday that rock is not dead. Willow Smith performs at…

Jaden and Willow Smith perform at The Warfield in San Francisco on Dec. 10, 2019. Photos: Joaquin Cabello. SAN FRANCISCO — Jaden and Willow Smith, the artist offspring of Will and Jada Pinkett Smith, played at The Warfield Tuesday on the penultimate night of the month-long WILLOW and ERYS Tour.…